The Form 4 filing, an SEC report of an insider's stock transactions, was submitted on October 30, 2026. It lists October 28, 2026, as the sale date.
Transaction details
| Transaction | |
|---|---|
| Date of Earliest Transaction | 2026-10-28 |
| Date of Latest Transaction | 2026-10-28 |
| Buy/Sell | sell |
| Transaction Count | 1 |
| Shares Transacted | 8,333 |
| Price | $118.00 |
| Total Transaction Value | $983,294.00 |
| Insider | |
| Ticker Symbol | BLLN |
| Company | BillionToOne, Inc. |
| Insider Name | Atay Oguzhan |
| Insider Title | Chairman and CEO |
| Sector - Industry | Other - Unclassified |
| Holdings | |
| Total Shares Owned After Transaction | 0 |
| Position Size Change | 100.00% |
| Filing | |
| Filing Date | 2026-10-30 |
| SEC Link | View filing |
FAQ
What type of transaction is this?
This was a share sale, reported with transaction code S. The transaction information also links it to an exercise or conversion. Those steps can turn stock rights or other investments into shares, but details of the related step are unavailable.
What was the average price of the transaction?
The average sale price was $118.00 per share.
How did this transaction affect the insider's holdings?
The 8,333 shares sold made up 100.00% of Oguzhan Atay's reported balance before the sale. The balance afterward was zero. The available ownership details do not show whether he has company shares in other accounts.
What's the total transaction value?
The total value was $983,294.00 for the one reported sale.
Are there any special circumstances around this transaction?
The transaction information includes a Rule 10b5-1 reference and a link to an exercise or conversion. A Rule 10b5-1 plan sets trading instructions in advance. No footnote text is available to confirm whether this specific sale was covered. The plan's start date and trading schedule are also unknown.
The exercise or conversion link is based on matching share counts. The related acquisition row is not available. The date, type of shares, and account for that step remain unknown. The match also does not prove that the exact shares received were sold or that both steps happened on the same day.
For research purposes only; not investment advice.